Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	11,000	11,000
Preferred stock, shares issued	5,043	5,573
Preferred stock, shares outstanding	5,043	5,573
Preferred stock, redemption value	$ 5,116	$ 5,652
Preferred stock, liquidation preference value	$ 5,116	$ 5,652
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	6,000,000,000	6,000,000,000
Common stock, shares issued	874,746	947,101
Common stock, shares outstanding	874,746	947,101